US7236764B2 - Method and apparatus for updating locations of dormant mobile stations - Google Patents

Method and apparatus for updating locations of dormant mobile stations Download PDF

Info

Publication number
US7236764B2
US7236764B2 US10/751,952 US75195204A US7236764B2 US 7236764 B2 US7236764 B2 US 7236764B2 US 75195204 A US75195204 A US 75195204A US 7236764 B2 US7236764 B2 US 7236764B2
Authority
US
United States
Prior art keywords
message
timer
sending
bts
location update
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US10/751,952
Other languages
English (en)
Other versions
US20040179492A1 (en
Inventor
Hang Zhang
Mo-Han Fong
Ke-Chi Jang
Jun Li
Xixian Chen
Chung-Ching Wang
Geng Wu
James Weisert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ericsson AB
Original Assignee
Nortel Networks Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nortel Networks Ltd filed Critical Nortel Networks Ltd
Priority to US10/751,952 priority Critical patent/US7236764B2/en
Assigned to NORTEL NETWORKS LIMITED reassignment NORTEL NETWORKS LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JANG, KE-CHI, LI, JUN, WANG, CHUNG-CHING, WU, GENG
Assigned to NORTEL NETWORKS LIMITED reassignment NORTEL NETWORKS LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEISERT, JAMES
Assigned to NORTEL NETWORKS LIMITED reassignment NORTEL NETWORKS LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FONG, MO-HAN, CHEN, XIXIAN, ZHANG, HANG
Publication of US20040179492A1 publication Critical patent/US20040179492A1/en
Application granted granted Critical
Publication of US7236764B2 publication Critical patent/US7236764B2/en
Assigned to ERICSSON AB reassignment ERICSSON AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NORTEL NETWORKS LIMITED
Assigned to ERICSSON AB reassignment ERICSSON AB CORRECTIVE ASSIGNMENT TO CORRECT THE ERRONEOUSLY RECORDED PATENT APPLICATION NUMBERS 12/471,123 AND 12/270,939 PREVIOUSLY RECORDED ON REEL 023565 FRAME 0191. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT OF RIGHT, TITLE AND INTEREST IN PATENTS FROM NORTEL NETWORKS LIMITED TO ERICSSON AB. Assignors: NORTEL NETWORKS LIMITED
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/02—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration by periodical registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/04—User notification, e.g. alerting and paging, for incoming communication, change of service or the like multi-step notification using statistical or historical mobility data

Definitions

  • the present invention relates to a method and an apparatus for updating locations of dormant mobile stations and in particular to a method and an apparatus for updating the locations of mobile stations to support fast call setup and reduce paging resource utilization in wireless access networks.
  • Code division multiple access (CDMA) communication systems provide communication services of wireless radio transmissions.
  • mobile stations (MSs) connected thereto may be in different states, e.g., active and dormant states.
  • a power-on MS may be operating in different states (e.g., active state, control-hold state or dormant state in a cdma2000 system).
  • the wireless access network When an MS is in the dormant state, usually, the wireless access network has no knowledge on the location of the dormant MS. It is ideal in the wireless access network to have knowledge of an MS's location at sector level when the MS is in the dormant state, so as to support fast call setup as well as efficient paging.
  • the network has to page the MS across the entire network to know the location of the MS. After the MS responds to the paging and the network becomes aware of the location of the MS, the network can allocate dedicated resources to the MS and move it to the active state. Usually, this procedure takes about 1–2 seconds. It has been shown that the system capacity and the MS's end-to-end performance are quite sensitive to the dormant to active state transition delay, especially in a network where packet-data applications dominate the traffic load.
  • the network has data to send to an MS that is in a dormant state, but without bringing the MS back to the active state (e.g., short data burst application).
  • the network has to send the data across the whole network as it has no information on the location of the MS. This usually consumes significant forward link resources, especially when the short data burst application is widely supported.
  • the wireless access network is aware of the location of the MSs in the dormant state, the network will send a short data burst to the MS through the right sector and the consumption of the forward link resource will be reduced.
  • the frequency of sending “location update” messages should be configurable based on different scenarios.
  • the method and apparatus in accordance with the present invention achieve reduction of the overhead caused by the location update and to enable efficient paging.
  • a method for determining when a location update message is sent from a mobile station (MS) to a base transceiver station (BTS) when the MS is in a dormant state includes the steps of: starting a first timer when the MS enters a dormant state; starting a second timer when the first timer reaches a predefined value T1; while the first timer is counting and prior to its reaching the predefined value T1, sending a layer 2 location update message whenever the MS performs an idle handoff indicating that the strongest pilot signal strength has changed from one sector to another sector; while the second timer is counting and prior to its reaching a predefined value T2, sending a layer 2 location update message whenever a further criterion is met; and after the second timer has reached the predefined value T2, sending no further layer 2 location update messages.
  • the further criterion is a time period, an MS's travel distance, a predefined number of idle handoffs.
  • the values T1 and T2 of the first and second timers are defined based on the condition of the network (e.g., QoS).
  • the values T1 and T2 are provided by the network to the MSs.
  • a method for defining the region of a wireless network in which to page a dormant mobile station (MS) when the network determines that data is to be sent to that dormant MS is provided.
  • the method includes the steps of: starting a first timer when the MS enters a dormant state; starting a second timer when the first timer reaches a predefined value T1; while the first timer is counting and prior to its reaching the predefined value T1, sending an MS page to the sector indicated by the most recent layer 2 location update message received from the MS; while the second timer is counting and prior to its reaching a predefined value T2, sending an MS page to the sectors surrounding the sector indicated in the most recently received layer 2 location update message consistent with the further criterion being used to trigger a location update messages being sent from the MS; and after the second timer has reached the predefined value T2, sending an MS page to all network sectors.
  • a method for determining when a location update message needs to be sent from an MS to a base transceiver station (BTS) when the MS is in a dormant state includes the steps of: determining if the MS has moved physically from one geographic region to another region served by a cell sector; and sending a location update message to the network servicing the MS indicating that the two strongest pilot signals are received by the MS.
  • the step of determining includes the step of determining if the MS has moved physically outside the geographic region served by a plurality of cell sectors defined in a sub-packet zone received previously from the network servicing the MS.
  • the step of determining may include the step of: determining if the MS has moved physically into the geographic region served by a cell sector not identified in a list of cell sectors in a sub-packet zone received previously from the network servicing the MS.
  • the location update message is transmitted as a Level 2 message.
  • the layer 2 location update message contains a message type and an MS identifier, thereby the network updating the location of the MS.
  • the method may further include the step of: sending by the BTS to the MS a location update acknowledgement message containing a message type and an MS identifier, in response to the layer 2 location update message from the MS. Accordingly, the location update is initiated by the MS.
  • the methods may further include the steps of sending by the MS in the dormant state to the BTS a reconnect message containing a message type and an MS identifier; and sending by the BTS to the MS a channel assignment message.
  • the MS's dormant to active state transition is initiated by the MS.
  • the method may further include the steps of: sending by the MS to the BTS a layer 2 location update message containing a message type and an MS identifier; sending by the BTS to the MS a location update acknowledgement message containing a message type and an MS identifier; and sending by the BTS to the MS a message informing MS's active set
  • the BTS initiates an MS's dormant to active state transition.
  • the method may further include the steps of: sending by the MS to the BTS a layer 2 location update message containing a message type and an MS identifier; sending by the BTS to the MS a location update acknowledgement message containing a message type and an MS identifier, sending by the BTS to the MS a message informing MS's active set; sending by the BTS to the MS a data burst message; and sending by the MS to the BTS a data burst acknowledgement message containing a message type and an MS identifier.
  • the data burst is initiated by the BTS.
  • zones may be registered to track MSs.
  • BTSs need to track MSs to a smaller tracking zone to achieve efficient dormant to active transition.
  • a method for tracking zone update to enable the network to page a mobile station (MS) in a smaller area, zones relating to base station controllers (BSCs) that control communications among the BTSs and the MSs, the zones being further defined as smaller zones that are registered for zone tracking.
  • the method includes the steps of: defining the size of the tracking zones; defining the zones of the BTSs; broadcasting tracking zone identifiers; and paging MSs in the tracking zones.
  • sub-packet zone ID is broadcasted in the overhead message.
  • the MS reports its location on R-CSCH when it detects a tracking zone change.
  • the network with the BSC level control can page the MS within the zone where the MS sends the report
  • the MS reports on its change of location in the tracking zone.
  • the reporting of the location change is made on R-CSCH.
  • the same value is assigned to the BTSs in the same tracking zone and the size of the zone is determined.
  • the values are defined for the tracking zone identifier; the number of tracking zone identifiers to be maintained in the tracking zone list; the maximum number of Radio Environment Report Messages that the MS is permitted to transmit before disabling tracking zone reporting the BTS's support of tracking zone reporting indicator; and the tracking zone list which is a list of most recent tracking zone identifier received by the MS.
  • a mobile station for communicating with a base transceiver station (BTS) and a base station controller (BSC) in a wireless communication system
  • BTS base transceiver station
  • BSC base station controller
  • the MS in a dormant state sending a location update message, the MS starting a first timer when the MS enters a dormant state; starting a second timer when the first timer reaches a predefined value T1; while the first timer is counting and prior to its reaching the predefined value T1, sending a layer 2 location update message whenever the MS performs an idle handoff indicating that the strongest pilot signal strength has changed from one sector to another sector; while the second timer is counting and prior to its reaching a predefined value T2, sending a layer 2 location update message whenever a further criterion is met; and after the second timer has reached the predefined value T2, sending no further layer 2 location update messages.
  • a communication network including the MS and a base transceiver stations (BTSs) may be provided according to an embodiment of the present invention.
  • the network pages a dormant MS when the network determines that data is to be sent to that dormant MS.
  • the BTS receives the layer 2 location update message and sends a location update acknowledgement message to the MS.
  • a system for tracking zone update to enable the network to page a mobile station (MS) in a smaller area, zones relating to base station controllers (BSCs) that control communications among the BTSs and the MSs, the zones being further defined as smaller zones that are registered for zone tracking.
  • MS mobile station
  • BSCs base station controllers
  • the network is able to know the location of dormant MSs.
  • the overhead caused by the location update can be reduced and still efficient paging is enabled.
  • FIG. 1 illustrates a wireless access network based on the CDMA system that can operate in accordance with an embodiment of the present invention.
  • FIG. 2 illustrates a method for updating the location of an MS to facilitate fast paging in accordance with an embodiment of the present invention.
  • FIGS. 3A and 3B illustrate a method for initiating the MS's dormant to active state transition by the MS in accordance with an embodiment of the present invention.
  • FIGS. 4A and 4B illustrate a method for initiating the MS's dormant to active state transition by the BTS in accordance with an embodiment of the present invention.
  • FIG. 5 illustrates a method for initiating the data burst transmission by the MS in accordance with an embodiment of the present invention.
  • FIG. 6 illustrates a method for initiating the data burst transmission by the BTS in accordance with an embodiment of the present invention.
  • FIG. 7 illustrates service zones defined by areas wherein MSs communicate with the relevant BTSs wherein a method for tracking zone update according to an embodiment of the present invention can operate.
  • the present invention uses short layer 2 signalling to facilitate location determination of the MS within a network.
  • the usage of shorter messages significantly over-performs the use of longer messages (e.g., layer 3).
  • a method of three-level location update by MSs in dormant state is provided.
  • the three-level location update in accordance with the present invention may be applied to a cdma2000 system, for example.
  • a three-level location update mechanism is defined that is a “sector level” location update, an “area level” location update, and a completion of location update (i.e., a “network level”).
  • the sector level location update After an MS enters a dormant state, it reports its location whenever it performs an idle handoff. This operation is called a “sector level” location update and operates only for a certain period of time. The purpose of the “sector level” location update is to speed up the packet data state transition from dormant to active.
  • the MS reduces the frequency of location update.
  • the MS performs location update once every specified number of idle handoffs. This operation is called “area level” location update and is performed for a certain period of time.
  • the purpose of the “area level” location update is to significantly reduce the location update overhead (compared to the case of “sector level” location update) and still provide information on an MS's ‘rough location’ for the network to estimate the paging area.
  • an MS stops updating its location completely.
  • the existing operation procedure for an MS in a dormant state is performed.
  • the network operates at three levels: i.e., a sector level, an area level (page control mechanism), and a network level.
  • T1 and T2 Whenever the network requires an MS to go to dormant through a “release” message, two timer values are defined, T1 and T2.
  • T1 specifies the time period when operating on the “sector level” location update
  • T2 specifies the time period when operating on the “area level” location update.
  • the values of T1 and T2 are defined based on the parameters such as the traffic type, the system load, the MS's type and so on.
  • the “location update” message should be as short as possible in order to increase the throughput and reduce the interference.
  • this message only the absolutely necessary information is carried, which is an MS_ID, to uniquely identify the MS.
  • This MS_ID is sent over a layer 2 message.
  • the MS_ID is assigned either during call setup or whenever the MS enters dormant state.
  • the MS sends the location update layer 2 message on the reverse link random access channel associated with the sector selected by the MSs. Therefore, when the network receives the layer 2 message, both the MS and the sector are uniquely identified.
  • Radio environment related information (such as pilot strength measurements) will not be attached with each “location update” message and can be sent on the dedicated channel if needed when an MS is brought back to the active state.
  • an acknowledgement to the “location update” message is implemented.
  • this is an optional operation and the network can decide whether such an acknowledgement is required or not through a control bit along with the “release” message which brings the MS to the dormant state.
  • the sector level location update is performed.
  • the timer is set to count and it continues up to T1.
  • the MS In today's system, when the MS is in the dormant state, it continuously monitors the pilot strength of the surrounding sectors. The MS typically selects a sector with the highest pilot strength to monitor any paging information from the network. When a new sector with the highest pilot strength is detected, the MS performs an idle handoff and puts this new sector into its active set (1 member).
  • the location update is performed after the occurrence of every idle handoff. The location update procedure is performed until the timer reaches T1.
  • the network is able to assign resources to the MS immediately on the reported sector and bring the MS back to its active state when needed. This feature is called fast call setup.
  • the timer reaches T1
  • the MS starts the “area level” location update procedure, and the timer restarts counting until T2.
  • the trigger for sending the “location update” message is a further criterion such as a timer based, distance based, or count of idle handoff based criteria.
  • the frequency of sending the “location update” message in this period should be much lower than that during the “sector level” operation. If the network needs to page an MS, the network can perform the paging in a larger area than one sector but much smaller area than the entire network and the specifics of this page is implementation specific.
  • the paging should be in sectors consistent with the distance an MS could travel during that 15 minute interval. If the further criterion is distance based, then the network page need only cover the area in which the MS could travel without causing a location update message being sent. If the further criterion is based on counting idle handoffs, a predefined number of idle handoffs can be counted or a predetermined number of idle handoffs indicating a move of the MS into a new sector can be counted. When the timer reaches T2, the MS starts the “network level” location update procedure.
  • the network location update is performed. An MS stops sending any location update message and the network has to do the general paging when needed. After an MS stops sending the “location update” message, the existing procedure is resumed.
  • the network can configure the MS to bypass the “sector level” and/or the “area level” update. By setting T1 as 0, the “sector level” update is bypassed. By setting T2 as 0, the “area level” update is bypassed.
  • the existing layer 3 message (resource release message (RRM)/resource release mini-message (RRMM) can be modified to include the values of T1 and T2 and the “location update acknowledge required” flag.
  • the value of T1 and/or T2 could be zero, which means that there is no corresponding location update period.
  • the “location update acknowledge required” flag (one bit) can be set or reset to show whether the acknowledgement to the “location update” message is supported.
  • Option 1 is to modify the header part in the existing reservation mode of the reverse link enhanced access channel (R-EACH). Such modified header format is shown in Tables hereinafter.
  • Option 2 is to define a new 5 ms frame (9.6 kb/s) for basic mode operation of R-EACH.
  • the layer 2 information carried on this frame is same as Option 1.
  • the long code mask includes the identification of sector used, R-EACH channel, the relationship between the MS and the selected R-EACH channel of the selected sector is unique.
  • a new MS_ID is defined and sent in the “location update” message.
  • This MS_ID length can be, e.g., 24 bit, to uniquely identify an MS in the dormant state that supports location update operation.
  • the MS_ID is sent through the reverse link channels associated with the sector which the MS selected as the member of its active set (the long code mask used for the transmission of the “location update” message) includes the sector ID. Therefore, the one-to-one relationship between the MS and the sector is clearly identified.
  • the MS_ID can be assigned either at the registration of the MS or whenever an MS goes to the dormant state through the existing RRM/RRMM.
  • the ACK can be sent on the forward link channel assignment channel (F-CACH) or on the forward link common control channel (F-CCCH).
  • F-CACH forward link channel assignment channel
  • F-CCCH forward link common control channel
  • the network can send the Enhanced Channel Assignment message (ECAM) on F_CCCH channel and bring the MS back to the active state.
  • ECAM Enhanced Channel Assignment message
  • the network can require the MS to report its radio environment through the pilot strength measurement message (PSMM)/pilot strength measurement mini-message (PSMMM) or the MS can autonomously sends PSMM/PSMMM once it acquires the traffic channel.
  • PSMM pilot strength measurement message
  • PSMMM pilot strength measurement mini-message
  • the network decides the paging range based on the parameters which control the rule of location update operation.
  • the overhead caused by the location update is to define a MAC layer message for the purpose of location update is reduced.
  • the network brings an MS to the dormant state, the network assigns a specific length (e.g., 24-bit) mobile station identifier, LOC_UP_MS_ID, to the MS in a L3 signalling message.
  • a specific length e.g., 24-bit
  • the MS Whenever an MS in the dormant state reports its location, instead of sending a L3 message with radio environment report, the MS sends its LOC_UP_MS_ID contained in a MAC layer “location update” message over a random channel associated with the sector the MS is monitoring. In this way, the network obtains the information on the MS's location.
  • the additional radio environment report can be sent on the dedicated channel if needed, once a dedicated channel is acquired.
  • the MAC layer “location update” message contains much fewer information bits than a L3 layer message
  • the MAC layer message can be sent, for example, in a frame with the length of 5 ms at rate of 9.6 kbps.
  • the shorter message length sent over the random channel reduces the interference and increases the throughput by reducing the possibility of collisions.
  • the network can acknowledge each “location update” message by using the existing MAC layer ACK mechanism.
  • FIG. 1 shows a wireless access network that can operate in accordance with an embodiment of the present invention.
  • the network includes a plurality of Base Transceiver Stations (BTSs) (here only two BTSs 111 and 113 are shown for simplicity).
  • BTSs Base Transceiver Stations
  • MSs MSs
  • MSs Mobile Station Controller
  • PSTN Public Switching Telephone Network
  • the BSC 141 and BTSs 111 and 113 each have central processing units (CPU) and related data store means (not shown) to perform the communication and other functions.
  • each of the MSs 121 – 125 has a CPU and related data store means (not shown) to perform the communication and the other functions.
  • Each of the MSs 121 – 125 provides a timer function to enable the location update operation. The timer's function may be achieved by the CPU of the MS. The timer starts when the MS enters its dormant state. The timer stops when it reaches a specified value T1. Thereafter, the timer restarts and it stops when it reaches another specified value T2.
  • the network shown in FIG. 1 operates at three levels: i.e., a sector level, an area level (page control mechanism), and a network level.
  • the network and the MSs communicate with the R_EACH messages and the F_CACH messages.
  • Table I shows the format of the release C R_EACH header (32 bits).
  • HASH_ID 16 RATE_WORD 3 MODE_ID 1 HO_REQ_ID 0 or 1 NEIGHBOR_PN 0 or 9 RESERVED As required
  • Table II shows the RATE_WORD Encoding.
  • Table III shows the format of a location update message (LUM).
  • Table IV shows the format of a reconnect message.
  • Table V shows the format of a reservation request message.
  • Table VI shows the format of an Early Acknowledgement Channel Assignment Message (EACAM).
  • Table VII shows the format of a power control channel assignment message (PCCAM).
  • Table VIII shows the format of a location update acknowledgment message (LUAM).
  • Table IX shows the format of a modified message format of a data burst acknowledgement message (DBAM).
  • FIG. 2 shows a method of location update by an MS.
  • the BTS and the MS communicate with the R_EACH messages and the F_CACH messages. Referring to FIGS. 1 and 2 , the location update initiated by an MS will be described.
  • T1 and T2 are defined based on the parameters such as the traffic type, the system load, the MS's type and so on.
  • the values of T1 and T2 are determined by the BSC 141 and sent by the BSC 141 (of the sector) to the MSs 121 – 125 .
  • the MS initiates the location update.
  • the MS e.g., the MS 121
  • the timer of the MS starts counting.
  • the location update header is shown in Table III (MSG_TYPE of two bits).
  • the location update acknowledgement message of three bits is shown in Table VIII (MSG_TYPE of three bits).
  • the BTS 1 Before sending the location update acknowledgement message to the MS, the BTS 1 notifies the BSC 141 to identify the update of the active set of the MS (Active_set info (MS_ID)). This is repeated in a case where the timer does not reach T1. The location of the dormant MS is updated.
  • the BTS 2 Before responding to the MS, the BTS 2 sends the BSC 141 a message identifying the MS (Active_set info (MS_ID)). The location of the dormant MS is updated.
  • the “location update” message is short in order to increase the throughput and reduce the interference.
  • this message only the absolutely necessary information is carried, which is an MS_ID, to uniquely identify the MS.
  • This MS_ID is sent over a layer 2 message.
  • the MS sends the location update layer 2 message on the reverse link random access channel associated with the sector selected by the MSs. Therefore, when the network receives the layer 2 message, both the MS and the sector are uniquely identified.
  • Radio environment related information (such as pilot strength measurements) will not be attached with each “location update” message and can be sent on a dedicated channel if needed when an MS is brought back to active state.
  • the BTS sends back the acknowledgement message to the MS that initiated the location update.
  • an acknowledgement to the “location update” message is implemented.
  • the network can decide whether such an acknowledgement is required or not through a control bit along with the “release” message which brings the MS to the dormant state.
  • the timer is set to count when the MS goes to dormant state and continues counting up to T1.
  • the MS In today's systems, when the MS is in the dormant state, it continuously monitors the pilot strength of the surrounding sectors.
  • the MS typically selects a sector with the highest pilot strength to monitor any paging information from the network. When a new sector with the highest pilot strength is detected, the MS performs an idle handoff and put this new sector into its active set (1 member).
  • the location update is performed after the occurrence of every idle handoff.
  • the location update procedure is performed as long as the timer does not reach T1. Therefore, before the timer counts T1, the network is able to assign resources to the MS immediately on the reported sector and bring the MS back to its active state when needed. This feature is called fast call setup.
  • the timer reaches T1
  • the MS starts the “area level” location update procedure, and the timer starts counting until T2.
  • the timer starts counting and the MS reports its location through the “location update” message.
  • the trigger for sending the “location update” message is a further criterion such as a timer based, distance based or count of idle handoff based criteria.
  • the frequency of sending the “location update” message in this period should be much lower than that during the “sector level” operation.
  • the timer reaches T2
  • the MS starts the “network level” location update procedure. An MS stops sending any location update message and the network has to do the general paging when needed.
  • the network needs to page an MS, it can do the paging in a larger area than one sector but much smaller area than the entire network and the specifics of this page is implementation specific. For example, if the further criterion is time based (such as every 15 minutes where the period of T2 is perhaps 3 hours), the paging should be in sectors consistent with the distance an MS could travel during that 15 minute interval. If the further criterion is distance based, then the network page need only cover the area in which the MS could travel without causing a location update message being sent. If the further criterion is based on counting idle handoffs, a predefined number of idle handoffs can be counted or a predetermined number of idle handoffs indicating a move of the MS into a new sector can be counted.
  • FIGS. 3A and 3B show the procedure of the dormant to active state transition initiated by the MS. Referring to FIGS. 1 and 3A and 3 B, the dormant to active state transition by an MS will be described.
  • the reconnect header is shown in Table IV (MSG_TYPE of two bits).
  • the BTS sends back the enhanced channel assignment message (ECAM).
  • ECAM enhanced channel assignment message
  • the MS returns to its active state and operates on one leg mode (i.e., one member in an active set). Later, the MS sends a pilot report message to the BTS over R_FCH/DCCH. This achieves higher throughput than R_REACH.
  • the BTS sends ECAM (multiple members of active set) message to the MS over F_FCH/PDCH, because the network requires that the MS to report its radio environment through PSMM/PSMMM or the MS can autonomously sends PSMM/PSMMM once it acquires the traffic channel.
  • ECAM multiple members of active set
  • Option 1 is to send the ECAM over F_CCCH as shown in FIG. 3A .
  • Option 2 is to send the ECAM over F_CACH as shown in FIG. 3B .
  • Option 2 is more efficient than option 1, but the length of message in over F_CACH is restricted.
  • the network decides the paging range based on the parameters which control the rule of location update operation.
  • FIGS. 4A and 4B show the procedure of the dormant to active state transition initiated by the BTS. Referring to FIGS. 1 and 4A and 4 B, the dormant to active state transition initiated by the BTS will be described.
  • the BTS initiates the location update in response to the MS's location update.
  • the MS e.g., the MS 121
  • sends a message consisting of a preamble and header (MSG_Type 00) to the BTS (e.g., the BTS 111 ) through the reverse link (R_EACH).
  • the location update header is shown in Table III (MSG_TYPE of two bits).
  • the location update acknowledgement message of three bits is shown in Table VIII (MSG_TYPE of three bits).
  • the network is now aware of the location of the MS and the BTS sends the enhanced channel assignment message (ECAM) over F_CCCH.
  • ECAM enhanced channel assignment message
  • the MS backs to its active state and operates on one leg mode (i.e., one member in an active set).
  • the MS sends a pilot report message to the BTS over R_DCCH/FCH, because the network requires that the MS to report its radio environment through PSMM once it acquires the traffic channel. This achieves higher throughput than R_REACH.
  • Option 1 is that the BTS sends ECAM of multiple members in active set as shown in FIG. 4A .
  • Option 2 is that the BTS sends ECAM of the MS's active set that is necessary to be updated as shown in FIG. 4B .
  • the active set can be gradually updated.
  • the network can transmit the data burst to an MS in the dormant state.
  • FIG. 5 shows the procedure of the data burst transmission initiated by a dormant MS. Referring to FIGS. 1 and 5 , the data burst transition initiated by the MS will be described.
  • the reservation request header is shown in Table V (MSG_TYPE of two bits).
  • the format of the Early Acknowledgement Channel Assignment Message (EACAM) shown in Table VI is modified by the location update acknowledgment message shown in Table VIII.
  • the format of the data burst acknowledgement message is shown in Table IX.
  • FIG. 6 shows the procedure of the data burst transmission initiated by the BTS. Referring to FIGS. 1 and 6 , the data burst transition initiated by the BTS will be described.
  • the location update message is shown in Table III (MSG_TYPE of two bits).
  • the network is aware of the location of the MS, the network sends a short data burst message to the MS over F_CCCH of the sectors in the “sub-packet data zone” where the MS is.
  • the format of the data burst acknowledgment message is shown in Table IX.
  • zones may be registered to track MSs. Such registration zones are efficient to voice services, but not to packet data services. BTSs need to track MS to a smaller tracking zone to achieve more efficient dormant to active transitions.
  • the present invention may provide a method for tracking zone update to enable a base transceiver station (BTS) to page a mobile station (MS) in a smaller area.
  • BTS base transceiver station
  • MS mobile station
  • sub-packet zone ID is broadcasted in the overhead message.
  • the MS that support the feature reports its location on R-CSCH when it detects a tracking zone change.
  • the service provider configures the size of the tracking zone and all BTSs in the same tracking zone have same zone value.
  • the network with the BSC level control can page the MS within the zone where the MS sends the report.
  • FIG. 7 shows an example of zones containing user MSs.
  • zones Z 11 , Z 12 and Z 13 belong to the area of one Base Station Controller BSC 1 .
  • Zones Z 21 , Z 22 and Z 23 belong to an adjacent area of another Base Station Controller BSC 2 .
  • Each zone is divided to a plurality of smaller areas: e.g., B 1 , B 2 , B 3 , B 4 and B 5 .
  • Zone Z 13 is adjacent to zone Z 23 and B 1 , B 2 and B 3 belong to zone Z 13 and B 4 and B 5 belong to zone 23 , respectively.
  • CDMA Numeric Information To perform the tracking zone and the paging shown in FIG. 7 , the following is necessary as CDMA Numeric Information.
  • the MS monitors the Paging Channel or the Quick Paging Channel or Forward Common Control Channel/Primary Broadcast Control Channel.
  • the MS can receive messages, receive an incoming call (MS terminated call), initiate a call (MS originated call), cancel a priority access and channel assignment (PACA) call, initiate a registration, or initiate a message transmission.
  • MS terminated call receives an incoming call
  • MS originated call initiates a call
  • PDA priority access and channel assignment
  • the MS may monitor the Quick Paging Channel to determine if it should receive messages from the Paging Channel or Forward Common Control Channel.
  • the MS Upon entering the Mobile Station Dormant State from the Mobile Station Initialization State, the MS shall perform the following:
  • the MS Upon entering the Mobile Station Dormant State from the Mobile Station Control on the Traffic Channel State, the MS shall perform all of the following:
  • the MS may exit the Mobile Station Dormant State at any time and enter the System Determination Substate of the Mobile Station Initialization State with a reselection indication.
  • the MS Upon expiration of the radio environment report timer, the MS shall disable the timer and set RER_ENABLED (the radio environment report) to NO. If TKZ_INFO_INCL s is equal to ‘1’, then the MS shall perform the following:
  • the configuration message sequence number, CONFIG_MSG_SEQ r shall be compared to that stored in EXT_SYS_PAR_MSG_SEQ s . If the comparison results in a match, the MS may ignore the message. If the comparison results in a mismatch, then the MS shall process the remaining fields in the message as follows.
  • TKZ_ENABLED YES and the tracking zone update timer is not enabled, the MS shall perform the following:
  • the configuration message sequence number, CONFIG_MSG_SEQ r shall be compared to that stored in A41_SYS_PAR_MSG_SEQ s . If the comparison results in a match, the MS may ignore the message. If the comparison results in a mismatch, then the MS shall process the remaining fields in the message to store parameters.
  • the MS shall store the following parameters:
  • the MS shall also store the following parameters if the MS is not in the Origination Attempt Substate or Page Response Substate:
  • the operation will be performed when the user directs the MS to transmit a Data Burst Message, or when the MS detects a change in the hook status since the last time when the MS sent hook status information and the MS supports the Device Information Message on the R-CSCH, or when the MS detects that a Radio Environment Report Message is required to be transmitted on the R-CSCH.
  • the MS shall set CURR_ACC_MSG_SEQ to NULL.
  • the MS shall enter the Update Overhead Information Substate of the System Access State with a message transmission indication within T 33m seconds.
  • the MS shall enter the Update Overhead Information Substate of the System Access State with a hook status indication within T 33m seconds.
  • the MS shall perform the following:
  • the MS enters different substates dependent upon the entry of the Update Overhead Information Substate as follows:
  • the MS sends a Data Burst Message, a Device Information Message, or a Radio Environment Report Message. If the BTS responds with an authentication request, the MS responds in this substate.
  • the MS Upon entering the Mobile Station Message Transmission Substate, the MS shall transmit the message as follows:
  • the MS While in the Mobile Station Message Transmission Substate, the MS shall monitor the Paging Channel or the Forward Common Control Channel. The MS determines and declares in a case of a loss of the Paging Channel or the Forward Common Control Channel.
  • the MS may exchange Traffic Channel frames with the BTS in accordance with the current service configuration.
  • the MS may perform the gating operation of Reverse Pilot Channel.
  • the MS While in the Traffic Channel Substate, the MS shall perform the following:
  • the MS confirms the disconnect of all calls and physical channels. Upon entering the Release Substate, the MS shall perform the following:
  • the MS shall set TKZ_COUNT to 0, and shall perform the following:
  • the MS shall perform the procedures to determine whether to enter the Mobile Station Dormant State or System Determination Substate of the Mobile Station Initialization State.
  • the MS shall perform the procedures to exit the Release Substate.
  • MSG_TAG RERM—The RERM is shown in Table XI.
  • the Capability Information record identifies whether the following optional or MOB_P_REV dependent features are supported by the MS.
  • the format of the indicator message is shown in Table XII.
  • MSG_TAG ESPM—The format of the Extended System Parameters Message (ESPM)is shown in Table XIII.
  • MSG_TAG:A41SPM The format of the ANSI-41 System Parameters Message (A41SPM) is shown in Table XIV.
  • MSG_TAG ERM—The format of the Extended Release Message (ERM) is shown in Table XV.
  • RER_INFO_INCL 1 MAX_NUM_RER_IDX 0 or 3 RER_TIME 0 or 3 RER_TIME_UNIT 0 or 2 MAX_RER_PILOT_LIST_SIZE 0 or 3 TKZ_INFO_INCL 1 MAX_NUM_TKZ_IDX 0 or 3 TKZ_UPDATE_PRD 0 or 4 TKZ_LIST_LEN 0 or 4 TKZ_TIMER 0 or 8
  • the radio environment report fields are required for being set to support tracking zone reporting by the MS while in the dormant state. If P_REV_IN_USE s is greater than or equal to four, the MS shall include the radio environment report fields; otherwise, the MS shall omit the radio environment report fields. When the MS includes time-sensitive radio environment report fields in the PDU being transmitted, the MS shall set the time-sensitive radio environment report fields.
  • the MS shall select the NUM_ADD_PILOTS and NUM_AUX_PILOTS pilots to be reported from among the pilots monitored in the ACCESS_HO_LIST and OTHER_REPORTED_LIST, and shall include the respective records in the PDU, as a list with NUM_ADD_PILOTS and NUM_AUX_PILOTS entries, according to the following procedure (or equivalent):
  • the MS shall generate a new RER_PILOT_LIST, which is the set of pilots that includes the Active Set pilot and the min(MAX_RER_PILOT_LIST_SIZE s , NUM_ADD_PILOTS+NUM_AUX_PILOTS) additional pilots with records included in the PDU that have the strongest pilot strength.
  • 1xEV-DO has been standardized by the Telecommunication Industry Association as TIA/EIA/IS-856, “CDMA2000, High Rate Packet Data Air Interface Specification”.
  • 1xEV-DV provides integrated voice and simultaneous high-speed packet data multimedia services within CDMA2000 at speeds of up to 3.09 Mbps.
  • MC-DV provides integrated multi-carrier voice and simultaneous high-speed packet data multimedia services within CDMA2000.
  • UMTS/HSDPA is High Speed Downlink Packet Access (HSDPA) within the Universal Mobile Telephone System (UMTS).
  • HSDPA High Speed Downlink Packet Access
  • UMTS Universal Mobile Telephone System

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
US10/751,952 2003-01-08 2004-01-07 Method and apparatus for updating locations of dormant mobile stations Active 2025-11-04 US7236764B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/751,952 US7236764B2 (en) 2003-01-08 2004-01-07 Method and apparatus for updating locations of dormant mobile stations

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US43874803P 2003-01-08 2003-01-08
US46910503P 2003-05-09 2003-05-09
US10/751,952 US7236764B2 (en) 2003-01-08 2004-01-07 Method and apparatus for updating locations of dormant mobile stations

Publications (2)

Publication Number Publication Date
US20040179492A1 US20040179492A1 (en) 2004-09-16
US7236764B2 true US7236764B2 (en) 2007-06-26

Family

ID=32718003

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/751,952 Active 2025-11-04 US7236764B2 (en) 2003-01-08 2004-01-07 Method and apparatus for updating locations of dormant mobile stations

Country Status (2)

Country Link
US (1) US7236764B2 (fr)
WO (1) WO2004064434A2 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050036510A1 (en) * 2003-08-13 2005-02-17 Behcet Sarikaya Apparatus, and an associated method, for performing link layer paging of a mobile station operable in a radio communication system
US20070097916A1 (en) * 2001-06-25 2007-05-03 Airvana, Inc., A Massachusetts Corporation Radio network control
US20070115891A1 (en) * 2005-11-24 2007-05-24 Samsung Electronics Co., Ltd. Method and system for transmitting/receiving data in a communication system
US20070135141A1 (en) * 2003-11-10 2007-06-14 M-Stack Limited Apparatus and method for handling messages that relate to a cell other than the currently operating cell in universal mobile telecommunications system user equipment
US20070140172A1 (en) * 2005-12-16 2007-06-21 Deepak Garg Radio network control
US20070149217A1 (en) * 2003-08-19 2007-06-28 Krishna Balachandran Method for tracking users in a communication network
US20070298806A1 (en) * 2006-06-26 2007-12-27 Muthaiah Venkatachalam Methods and apparatus for location based services in wireless networks
US20080108336A1 (en) * 2006-11-08 2008-05-08 Muthaiah Venkatachalum Location-based services in wireless broadband networks
US20100099421A1 (en) * 2008-10-17 2010-04-22 Verizon Corporate Services Group, Inc. Efficient messaging over internet protocol
US7751835B2 (en) 2005-10-04 2010-07-06 Airvana, Inc. Non-circular paging areas
US8085696B2 (en) 2006-07-14 2011-12-27 Airvana Networks Solutions, Inc. Dynamic modification of route update protocols
US8094630B2 (en) 2005-12-16 2012-01-10 Airvana Network Solutions, Inc. Radio frequency dragging prevention
US8099504B2 (en) 2005-06-24 2012-01-17 Airvana Network Solutions, Inc. Preserving sessions in a wireless network
US8145221B2 (en) 2005-12-16 2012-03-27 Airvana Network Solutions, Inc. Radio network communication
US8195187B2 (en) 2001-06-25 2012-06-05 Airvana Network Solutions, Inc. Radio network control
US20130054797A1 (en) * 2010-04-20 2013-02-28 Zte (Usa) Inc. Method and system for hierarchical tracking of content and cache for networking and distribution to wired and mobile devices
US20130165168A1 (en) * 2011-12-27 2013-06-27 Sprint Communications Company L.P. Population characteristics derived from control signals on wireless communication networks
US8843638B2 (en) 2007-12-13 2014-09-23 Ericsson Evdo Inc. Handing off active connections

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7039429B2 (en) * 2003-05-08 2006-05-02 Samsung Electronics Co., Ltd. System and method for paging a mobile station in a wireless network
KR20040108133A (ko) * 2003-06-16 2004-12-23 삼성전자주식회사 호 설정을 위한 이동 통신 시스템 및 그 시스템에서의 호설정 방법
US7373157B2 (en) * 2003-07-15 2008-05-13 Qualcomm Incorporated Method and apparatus for short-slot-cycle paging
US7593364B2 (en) * 2003-11-26 2009-09-22 Nokia Corporation Method and apparatus to provide efficient paging for a network initiated data session
US8081724B2 (en) * 2003-12-05 2011-12-20 Samsung Electronics Co., Ltd. Wireless network and wireless access terminals using SYNC—ID having increased granularity
CN102082731B (zh) * 2004-02-24 2016-02-17 苹果公司 在网络中提供特殊应用的方法和设备
US7039430B2 (en) * 2004-03-04 2006-05-02 Samsung Electronics Co., Ltd. System and method for controlling an operational mode of a MAC layer in a broadband wireless access communication system
US7630356B2 (en) * 2004-04-05 2009-12-08 Nortel Networks Limited Methods for supporting MIMO transmission in OFDM applications
US7590421B2 (en) * 2004-06-07 2009-09-15 Lg Electronics Inc. Supporting idle mode of mobile station in wireless access system
US20050282562A1 (en) 2004-06-18 2005-12-22 Samsung Electronics Co. Ltd. Method and system for forming and transmitting/receiving neighbor base station information in a broadband wireless access communication system
US8014377B2 (en) 2004-06-24 2011-09-06 Nortel Networks Limited Efficient location updates, paging and short bursts
US20060013182A1 (en) * 2004-07-19 2006-01-19 Telefonaktiebolaget Lm Ericsson Selective multicarrier CDMA network
US8000221B2 (en) * 2004-07-20 2011-08-16 Qualcomm, Incorporated Adaptive pilot insertion for a MIMO-OFDM system
US7826478B2 (en) * 2004-07-26 2010-11-02 Research In Motion Limited Method and apparatus for soliciting connectivity from wireless data networks
JP4427415B2 (ja) * 2004-08-05 2010-03-10 株式会社日立コミュニケーションテクノロジー ハンドオフ制御方法、無線制御局及び無線基地局
US7636563B2 (en) * 2004-10-01 2009-12-22 Lg Electronics Inc. Performing idle mode in a wireless access system
EP3745634A1 (fr) 2004-10-15 2020-12-02 Apple Inc. Systèmes d'attribution de ressources de communication et procédés
KR101119095B1 (ko) * 2004-11-04 2012-06-12 엘지전자 주식회사 광대역 무선접속 시스템에서 유휴 모드 이동국의 아이피주소 갱신 방법 및 이를 위한 정보 전송 방법
KR101108850B1 (ko) * 2004-11-28 2012-02-09 엘지전자 주식회사 광대역 무선접속 시스템에 적용되는 유휴모드 수행 방법
WO2006071096A1 (fr) * 2004-12-30 2006-07-06 Lg Electronics Inc. Procede de mise a jour d'information de canal par une station mobile se trouvant en mode d'economie d'energie
KR101166819B1 (ko) * 2005-06-30 2012-07-19 엘지디스플레이 주식회사 쉬프트 레지스터
US7313394B2 (en) 2005-07-15 2007-12-25 Intel Corporation Secure proxy mobile apparatus, systems, and methods
US20070042776A1 (en) * 2005-08-19 2007-02-22 Sanjay Bakshi Wireless packet-switched paging apparatus, systems, and methods
US7979081B1 (en) * 2005-08-22 2011-07-12 Ericsson Ab Method and system for distributed distance-based paging
US7778269B2 (en) * 2005-10-07 2010-08-17 Research In Motion Limited Methods and systems for customized multi-application channel control
US7693555B2 (en) 2005-10-21 2010-04-06 Intel Corporation Sleep-mode wireless cell reselection apparatus, systems, and methods
US20090207790A1 (en) * 2005-10-27 2009-08-20 Qualcomm Incorporated Method and apparatus for settingtuneawaystatus in an open state in wireless communication system
US8068846B2 (en) * 2006-03-28 2011-11-29 Alcatel Lucent Method of assigning a mobile unit to a tracking area based on a location update frequency
US20070237114A1 (en) * 2006-03-30 2007-10-11 Motorola, Inc. Wireless data session handoff using location update message
US20070248032A1 (en) * 2006-04-21 2007-10-25 Subramanian Vasudevan Method of providing route update messages and paging access terminals
US7640028B2 (en) * 2006-06-30 2009-12-29 Nokia Corporation Apparatus, method and computer program product providing enhanced location update scheme for mobile station in a relay-based network
US8260372B2 (en) * 2006-06-30 2012-09-04 Nokia Corporation Traffic monitoring for regulating states of a terminal
KR100800722B1 (ko) * 2006-06-30 2008-02-01 삼성전자주식회사 분실 휴대단말기의 위치 확인 방법 및 시스템
WO2008115858A1 (fr) * 2007-03-16 2008-09-25 Poplio, Inc. Plate-forme de jeu multijoueur géodépendant
US20080242373A1 (en) * 2007-03-26 2008-10-02 Motorola, Inc. Method and device for providing position information
CA3017227C (fr) * 2007-04-11 2022-06-28 Optis Wireless Technology, Llc Informations sur une structure de signaux de reference pour l'obtention de mesures relatives a des cellules voisines
KR101140495B1 (ko) * 2007-06-21 2012-06-01 인터디지탈 테크날러지 코포레이션 Ｅ－ｕｔｒａｎ에 대한 핸드오버 관련 측정 보고
JP5096058B2 (ja) * 2007-07-23 2012-12-12 京セラ株式会社 無線基地局及び無線通信方法
JP2009198321A (ja) * 2008-02-21 2009-09-03 Panasonic Corp 移動体通信端末及び移動体通信端末の側位方法
WO2010006649A1 (fr) * 2008-07-17 2010-01-21 Nokia Siemens Networks Oy Communications de dispositif à dispositif dans un système cellulaire
US8457067B2 (en) * 2008-09-15 2013-06-04 Qualcomm Incorporated Cache with variable lifetime for storing overhead messages for femto deployments
US8391885B2 (en) * 2009-03-25 2013-03-05 Qualcomm Incorporated Scheduling location update reports of access terminals to an access network within a wireless communications system
US8280417B2 (en) * 2009-12-23 2012-10-02 Intel Corporation Short user messages in system control signaling
CN102457818B (zh) * 2010-10-18 2015-12-16 中兴通讯股份有限公司 一种gsm-r系统中短层2头消息的下发方法及系统
KR101384824B1 (ko) 2010-12-07 2014-04-15 엘지전자 주식회사 무선 접속 시스템에서 위치 업데이트를 수행하기 위한 방법 및 장치
US11250494B2 (en) * 2014-08-29 2022-02-15 Ncr Corporation Customer locating and delivery
US11128661B2 (en) * 2016-12-31 2021-09-21 Huawei Technologies Co., Ltd. Terminal matching method and apparatus
US20230205299A1 (en) * 2020-04-16 2023-06-29 Hewlett-Packard Development Company, L.P. Device deactivation

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5889770A (en) 1994-04-08 1999-03-30 Nokia Telecommunicaitons Oy Location updating for a packet-switched data service in a mobile communciation system
US6058308A (en) 1997-02-18 2000-05-02 Telefonaktiebolaget L M Ericsson Apparatus, and associated method, for adaptively selecting a paging area in which to page a mobile terminal
WO2000028747A1 (fr) 1998-11-12 2000-05-18 Fujitsu Limited Procede et dispositif permettant d'eviter le basculement entre deux zones d'un reseau de communications sans fil
US6138018A (en) 1995-07-31 2000-10-24 Motorola, Inc. Method for controlling a cell-registration feature of a mobile in a wireless communication system
US6243579B1 (en) * 1996-04-01 2001-06-05 Nokia Telecommunications Oy Controlling operating states of a mobile station in a packet radio system
WO2001052589A1 (fr) 2000-01-10 2001-07-19 Qualcomm Incorporated Procede permettant de realiser un enregistrement de niveau ressources radio dans un systeme de communication sans fil
US20020052204A1 (en) 1998-09-22 2002-05-02 Bender Paul E. Method and apparatus for rapid assignment of a traffic channel in digital cellular communication systems
US20020075823A1 (en) 2000-08-19 2002-06-20 Samsung Electronics Co., Ltd. Apparatus and method for managing dormant state in a wireless packet data system
US20020187793A1 (en) 2001-06-12 2002-12-12 Dimitrious Papadimitriou Global paging of mobile stations in a wireless network using MSC pool
US20030002464A1 (en) 1997-09-16 2003-01-02 Ramin Rezaiifar Channel structure for communication systems
EP1304835A2 (fr) 2001-10-17 2003-04-23 Alcatel Procédé et réseau de messagerie
US6950415B2 (en) * 2000-08-18 2005-09-27 Samsung Electronics Co., Ltd. Apparatus and method for managing dormant state in a wireless packet data system
US6954647B2 (en) * 2002-09-05 2005-10-11 Industrial Technology Research Institute Mobility management method and system for wireless data networks
US7079511B2 (en) * 2000-12-06 2006-07-18 Qualcomm, Incorporated Method and apparatus for handoff of a wireless packet data services connection
US7136665B2 (en) * 2000-12-27 2006-11-14 Fujitsu Limited Mobile communications system and method for controlling transmission power
US7148844B2 (en) * 2001-10-02 2006-12-12 Sirf Technology, Inc. Global positioning apparatus and method for using a temperature compensated oscillator to perform a position fix

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5889770A (en) 1994-04-08 1999-03-30 Nokia Telecommunicaitons Oy Location updating for a packet-switched data service in a mobile communciation system
US6138018A (en) 1995-07-31 2000-10-24 Motorola, Inc. Method for controlling a cell-registration feature of a mobile in a wireless communication system
US6243579B1 (en) * 1996-04-01 2001-06-05 Nokia Telecommunications Oy Controlling operating states of a mobile station in a packet radio system
US6058308A (en) 1997-02-18 2000-05-02 Telefonaktiebolaget L M Ericsson Apparatus, and associated method, for adaptively selecting a paging area in which to page a mobile terminal
US20030002464A1 (en) 1997-09-16 2003-01-02 Ramin Rezaiifar Channel structure for communication systems
US20020052204A1 (en) 1998-09-22 2002-05-02 Bender Paul E. Method and apparatus for rapid assignment of a traffic channel in digital cellular communication systems
WO2000028747A1 (fr) 1998-11-12 2000-05-18 Fujitsu Limited Procede et dispositif permettant d'eviter le basculement entre deux zones d'un reseau de communications sans fil
WO2001052589A1 (fr) 2000-01-10 2001-07-19 Qualcomm Incorporated Procede permettant de realiser un enregistrement de niveau ressources radio dans un systeme de communication sans fil
US6950415B2 (en) * 2000-08-18 2005-09-27 Samsung Electronics Co., Ltd. Apparatus and method for managing dormant state in a wireless packet data system
US20020075823A1 (en) 2000-08-19 2002-06-20 Samsung Electronics Co., Ltd. Apparatus and method for managing dormant state in a wireless packet data system
US7079511B2 (en) * 2000-12-06 2006-07-18 Qualcomm, Incorporated Method and apparatus for handoff of a wireless packet data services connection
US7136665B2 (en) * 2000-12-27 2006-11-14 Fujitsu Limited Mobile communications system and method for controlling transmission power
US20020187793A1 (en) 2001-06-12 2002-12-12 Dimitrious Papadimitriou Global paging of mobile stations in a wireless network using MSC pool
US7148844B2 (en) * 2001-10-02 2006-12-12 Sirf Technology, Inc. Global positioning apparatus and method for using a temperature compensated oscillator to perform a position fix
EP1304835A2 (fr) 2001-10-17 2003-04-23 Alcatel Procédé et réseau de messagerie
US6954647B2 (en) * 2002-09-05 2005-10-11 Industrial Technology Research Institute Mobility management method and system for wireless data networks

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
"3GPP2 Access Network Interfaces Interoperability Specification Release "A" 3GPP2 A.S0001", Jan. 2000, XP002201614.
"3GPP2 Access Network Interfaces Interoperability Specification Release A", Call Processing and Supplementary Services, Jan. 18, 2000, pp. 111-183, XP-002201614.
"Signaling Link Access Control (LAC) Standard for CDMA2000 Spread Spectrum Systems", Telecommunications Industry Association: "TIA EIA IS-2000. 4-C, May 2002, Release C, p. vi, chapter 2.1.1.4.1.5", XP002291326.
"Upper Layer (Layer 3) Signaling Standard for CDMA2000 Spread Spectrum Systems", Telecommunications Industry Association: TIA/EIA/IS-2000. 5-C, Release C, p. xv, Chapters: 2.6.5; 2.7.2.3.2.5; 2.7.2.3.2.6'; 2.7.2.3.2.21; 2.7.2.3.2.27; 2.7.2.3.2.34; 3.7.2.3.2.1; 3.7.2.3.2.13; 3.7.2.3.2.30; 3.7.3.3.2.12; 3.7.3.3.2.13; and 3.7.3.3.2.33-35''; May 2002, XP002291325.
Kelley, "Radio Environment Reporting For Fast Call Setup", Motorola 3<SUP>rd </SUP>Generation Partnership Project 2 "3GPP2".
Kruijt et al., "Location Management Strategies for Cellular Mobile Networks", Electronics & Communication Engineering Journal, vol. 10, No. 2, Apr. 1, 1998, pp. 64-72, XP-000782774.
Kruijt et al., "Location management strategies for cellular mobile networks", Electronics and Communication Engineering Journal, Institution of Electrical Engineers, vol. 10, No. 2, Apr. 1998, pp. 64-72, XP000782774.

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9019935B2 (en) 2001-06-25 2015-04-28 Ericsson Evdo Inc. Radio network control
US20070097916A1 (en) * 2001-06-25 2007-05-03 Airvana, Inc., A Massachusetts Corporation Radio network control
US8195187B2 (en) 2001-06-25 2012-06-05 Airvana Network Solutions, Inc. Radio network control
US8160020B2 (en) 2001-06-25 2012-04-17 Airvana Network Solutions, Inc. Radio network control
US20050036510A1 (en) * 2003-08-13 2005-02-17 Behcet Sarikaya Apparatus, and an associated method, for performing link layer paging of a mobile station operable in a radio communication system
US7623876B2 (en) * 2003-08-13 2009-11-24 Alcatel Lucent Apparatus, and an associated method, for performing link layer paging of a mobile station operable in a radio communication system
US7480508B2 (en) * 2003-08-19 2009-01-20 Alcatel-Lucent Usa Inc. Method for tracking users in a communication network
US20070149217A1 (en) * 2003-08-19 2007-06-28 Krishna Balachandran Method for tracking users in a communication network
US20070135141A1 (en) * 2003-11-10 2007-06-14 M-Stack Limited Apparatus and method for handling messages that relate to a cell other than the currently operating cell in universal mobile telecommunications system user equipment
US8099504B2 (en) 2005-06-24 2012-01-17 Airvana Network Solutions, Inc. Preserving sessions in a wireless network
US7751835B2 (en) 2005-10-04 2010-07-06 Airvana, Inc. Non-circular paging areas
US20070115891A1 (en) * 2005-11-24 2007-05-24 Samsung Electronics Co., Ltd. Method and system for transmitting/receiving data in a communication system
US8619702B2 (en) 2005-12-16 2013-12-31 Ericsson Evdo Inc. Radio network control
US20070140172A1 (en) * 2005-12-16 2007-06-21 Deepak Garg Radio network control
US8094630B2 (en) 2005-12-16 2012-01-10 Airvana Network Solutions, Inc. Radio frequency dragging prevention
US8145221B2 (en) 2005-12-16 2012-03-27 Airvana Network Solutions, Inc. Radio network communication
US20070298806A1 (en) * 2006-06-26 2007-12-27 Muthaiah Venkatachalam Methods and apparatus for location based services in wireless networks
US8391894B2 (en) 2006-06-26 2013-03-05 Intel Corporation Methods and apparatus for location based services in wireless networks
US8085696B2 (en) 2006-07-14 2011-12-27 Airvana Networks Solutions, Inc. Dynamic modification of route update protocols
US20080108336A1 (en) * 2006-11-08 2008-05-08 Muthaiah Venkatachalum Location-based services in wireless broadband networks
US8843638B2 (en) 2007-12-13 2014-09-23 Ericsson Evdo Inc. Handing off active connections
US8503300B2 (en) * 2008-10-17 2013-08-06 Verizon Patent And Licensing Inc. Efficient messaging over internet protocol
US20100099421A1 (en) * 2008-10-17 2010-04-22 Verizon Corporate Services Group, Inc. Efficient messaging over internet protocol
US20130054797A1 (en) * 2010-04-20 2013-02-28 Zte (Usa) Inc. Method and system for hierarchical tracking of content and cache for networking and distribution to wired and mobile devices
US8850003B2 (en) * 2010-04-20 2014-09-30 Zte Corporation Method and system for hierarchical tracking of content and cache for networking and distribution to wired and mobile devices
US20130165168A1 (en) * 2011-12-27 2013-06-27 Sprint Communications Company L.P. Population characteristics derived from control signals on wireless communication networks

Also Published As

Publication number Publication date
US20040179492A1 (en) 2004-09-16
WO2004064434B1 (fr) 2005-02-17
WO2004064434A3 (fr) 2004-12-09
WO2004064434A2 (fr) 2004-07-29

Similar Documents

Publication Publication Date Title
US7236764B2 (en) Method and apparatus for updating locations of dormant mobile stations
EP2028894B1 (fr) Procédés de manipulation de rapports de mesures dans un système de communication sans fil
KR100861450B1 (ko) 이동국들의 서로 다른 채널로의 재분배 방법, 장치 및 시스템
EP1346594B1 (fr) Procede et appareil de recuperation d&#39;appels dans un systeme de communication sans fil
US7260401B2 (en) Method and apparatus for flexible call recovery in a wireless communication system
EP3319366A1 (fr) Procédé permettant de prendre en charge la resélection de cellules dans un réseau hspa évolué
EP3389329A1 (fr) Procédé de traitement de transmission de données, équipement d&#39;utilisateur et station de base
AU2002217922A1 (en) Method and apparatus for call recovery in a wireless communication system
US20230037995A1 (en) Communications device and method
JP5031975B2 (ja) 通信システム内で通話開始を行う方法
KR102503667B1 (ko) 무선 이동 통신 시스템에서 rrc 연결 상태 상향링크 전송 및 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR102657930B1 (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR102617597B1 (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR102657934B1 (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR102604465B1 (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR102605958B1 (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR102517302B1 (ko) 무선 이동 통신 시스템에서 rrc 연결 상태 상향링크 전송 및 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR20230158242A (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR20230158233A (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR20230158239A (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR20230158235A (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR20230158236A (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR20230158237A (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR20230158238A (ko) 무선 이동 통신 시스템에서 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치
KR20230136340A (ko) 무선 이동 통신 시스템에서 rrc 연결 상태 상향링크 전송 및 rrc_inactive 상태 상향링크 전송을 위한 방법 및 장치

Legal Events

Date Code Title Description
AS Assignment

Owner name: NORTEL NETWORKS LIMITED, QUEBEC

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JANG, KE-CHI;LI, JUN;WANG, CHUNG-CHING;AND OTHERS;REEL/FRAME:014608/0384

Effective date: 20040406

Owner name: NORTEL NETWORKS LIMITED, QUEBEC

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ZHANG, HANG;FONG, MO-HAN;CHEN, XIXIAN;REEL/FRAME:014608/0362;SIGNING DATES FROM 20040407 TO 20040412

Owner name: NORTEL NETWORKS LIMITED, QUEBEC

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WEISERT, JAMES;REEL/FRAME:014608/0435

Effective date: 20040421

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCF Information on status: patent grant

Free format text: PATENTED CASE

AS Assignment

Owner name: ERICSSON AB, SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NORTEL NETWORKS LIMITED;REEL/FRAME:023565/0191

Effective date: 20091113

Owner name: ERICSSON AB,SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NORTEL NETWORKS LIMITED;REEL/FRAME:023565/0191

Effective date: 20091113

AS Assignment

Owner name: ERICSSON AB,SWEDEN

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ERRONEOUSLY RECORDED PATENT APPLICATION NUMBERS 12/471,123 AND 12/270,939 PREVIOUSLY RECORDED ON REEL 023565 FRAME 0191. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT OF RIGHT, TITLE AND INTEREST IN PATENTS FROM NORTEL NETWORKS LIMITED TO ERICSSON AB;ASSIGNOR:NORTEL NETWORKS LIMITED;REEL/FRAME:024312/0689

Effective date: 20100331

Owner name: ERICSSON AB, SWEDEN

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ERRONEOUSLY RECORDED PATENT APPLICATION NUMBERS 12/471,123 AND 12/270,939 PREVIOUSLY RECORDED ON REEL 023565 FRAME 0191. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT OF RIGHT, TITLE AND INTEREST IN PATENTS FROM NORTEL NETWORKS LIMITED TO ERICSSON AB;ASSIGNOR:NORTEL NETWORKS LIMITED;REEL/FRAME:024312/0689

Effective date: 20100331

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 12